Elevator-lock.



PATENT'ED SEPT. 19, 1905.

R. J. ROULO.

ELEVATOR LOCK;

APPLICATION FILED JULY 13,1905.

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Annnzw. a mun-w cu., PNDYO-LIYNOGRAFHERS. wAsw-mmw c c PATBNTED SEPT. 19, 1905. R. J. ROULO.

ELEVATOR LOCK.

APPLICATION 11mm JULY x3, 1905.

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" UNITED STATES PATENT orrron.

ELEVATOR-LOCK.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed July 13, 1905. Serial No- 269,455.

locking the doors of elevator-shafts and elevator-cages. so that they cannot be opened except when the cage or car is at the proper landing, and when the elevator-door is opened or partially opened to lock the elevator-cage.

against movement until .the door is again closed, thus rendering it impossible for an accident to occur by reason of the startingor stopping of the cage while a person is in the act of getting into or out of the elevator or by reason of stepping through the open doorway while the cage is above or below the landing.

In using elevator-locks constructed in accordance with my aforesaid Letters Patent I employ a bar horizontally disposed on the inner surface of the sliding doors of the elevator-shaft to cooperate with mechanism carried by the cage to lock and release the operatinglever which controls the movement of the cage, and have found that by reason of the varying distances in different elevators between the inner surface of the wall of the elevator-shaft in which the doorway is formed and on which the door is slidably mounted, and the outer surface of the wall of the cage adjacent thereto that where the distance is narrow a thin bar is required and that where it is greater or wider a thicker one is necessary to operate said mechanism. A thick bar is objectionable by reason of its extra cost, as well as on account of its size and protrusion, and besides it is obvious that to produce and carry in stock a lot of bars varying in dimensions to equip different elevators would be expensive and undesirable. To overcome the above-mentioned objections by providing adjustable protrusile means for coaction with the operating mechanism of the elevator-cage, so as to control the movement of the latter and to lock and unlock the elevator-door, is 5 another important object of this invention.

- Other objects and advantages will be disclosed in the subjoined description and explanation.

The invention consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in Which.-

Figure 1 is a fragmental view, partly in sectionand partly in elevation, of an elevatorshaft with the elevator-cage therein, showing the door of the elevator closed and the cage in the position to permit of it being open. Fig. 2 is a plan view of a portion of the adjustable or extensible bar and lock-casing, the former being employed to coact with. certain parts on the elevator -cage to prevent its movement while the door is open. In this figure the dotted lines indicate the positions about which the parts will assume when the door is partially open. Fig. 3 is an inner face view of the adjustable bar and lock-casing, showing it detached from the door. Fig. 4 is a similar view of the opposite side of said bar and easing. Fig. 5 is a rear face view of the lock-casing with the adjustable bar removed and showing the locking mechanism in position thereon. Fig. 6 is a plan view of the lock-casing. Fig. 7 is an enlarged rear face view thereof, showing by dotted lines some of the positions the parts will occupy in the operation of disengaging the lockingbolt from the hasp on the-door-jamb. Fig. 8 is a fragmental plan view of the lock-casing and adjustable bar, showing by dotted lines their relative positions when the bar is extended; and Fig. 9 is a detached perspective View of one of the links or brackets used for connecting the bar and lock-casing together.

Like numerals of reference refer to corresponding parts throughout the different views you which is mounted near its front wall 17 or the wall thereof adjacent to the wall of the elevator-shaft in which the doorway is located an operating-lever 18, which controls the movement of the mechanism (not shown) by means of which the cage is operated. The lever 18 is provided near its upper end witha of the elevator-shaft.

forwardly-extending arm 19 to engage a vertically-movable locking-bar 20, the upper the wall 17 of the cage by means of straps 22 or otherwise. Fulcrumed on the wall 17 of the cage and near the bar is a bell-crank lever, the longer arm 23 of which engages said bar, and the shorter arm 24 thereof is connected, by means of a rod 25, to the lower end of a bar 26, which is pivotally secured to the wall 17 of the cage. That portion of the wall 17 adjacent to the doorway of the cage is provided with an opening 27, in which is fulcrumed a lever '28, which projects forwardly and rearwardly through said wall. The outer end of the lever 28 is preferably provided with an antifriction-roller 29, while the inner end thereof is connected, by means of a rod 30, to the upper end of the bar 26, as is clearly shown in Fig. 1 of the drawings.

The door 31 of the elevator-shaft is slida'bly mounted on the wall thereof in which the doorway is formed and may rest at its bottom on a track 32 on the floor or landing 33 Horizontally secured on the inner surface of the door 31 is the lock-casing 34, which in cross-section is in the form of three sides of a rectangular figure and has near each of its ends, in its top and bottom, recesses 35 for the purpose to be presently explained. That portion of the easing 34 adjacent to the jamb -36 of the doorway of the elevator-shaft on which the hasp 37 is secured is formed with a box-like enlargement 38, each of the sides of which is provided with a curved slot or race 39 to act as guides for a projection 40 on the lock-operating hand-lever 41, which extends through an opening in the top of the enlargement 38 of the lock-casing and is fulcrumed thereon. Pivotally secured atits inner end 'to'the lever 41 is a locking-bolt 42, the other end of which extends through an opening in the end of the enlargement 38 and is provided with adownwardly-extending hook 43 to engage the hasp 37 on the door-jamb. Pivotally secured at one of its ends to the lower end of the handlever 41 is a dog or detent 44, the free end of which is provided with a notch or recess 45 to engage a horizontal projection or lug 46 within the enlargement 38, so as to hold the lockbolt 42 in its raised or unlocked position, as is clearly shown in Fig. 5 of the drawings. Slidably mounted within the lower portion of the enlargement 38 of the lock-casing is a block 47, which is provided with alongitudinal slot 48 to receive a lug 49 on the casing employed to hold said block in position, yet to permit it to move back and forth. Secured at one of its ends to the block 47 is an actuating-spring 50, the other end of which is secured to the upper portion of the enlargement 38 of the lock-casing.

Pivotally secured at one of its ends to the lower portion of the hand-lever 41 and usually on the projection 40 thereof is a link 51, the

other end of which is similarly connected to the front end of a sliding bar 52, which is provided with a longitudinal slot 53 to receive a guide-bolt 54 on the lock-casing. The bar 52 is retracted by means of a spring 55, one end of which is secured to said bar and the other to a lug or projection 56 on the lock-casing. Pivotally secured at one of its ends to a boss 57 on the bar 52 is a link 58, the other end of which is pivotally secured to a bracket 59 intermediate of its ends, which ends are provided with apertured prongs or projections 60 'and 61, as is clearly shown in Fig. 9 of the drawings. Two of these brackets are employed to project the extensible or adjustable bar 34, which is in cross-section in the form of three sides of a rectangular figure and fits over the casing 34, as is clearly shown in Fig. 3 of the drawings. That end of the bar 34 adjacent to the enlargement 38 overlaps the same, as shown in Fig. 4, and the opposite end of said bar is outwardly beveled or inclined as at '35. (See Fig. 2 of the drawings.) The prongs or projections 61 of the bracket 59, located near the enlargement 38 of the lock-casing, are pivotally secured to the top and bottom of said casing near the recesses '35 therein, and the prongs 60 of said bracket arepivotally secured to the top and bottom of the bar 34", the recesses 35 being provided in the casing 34, so as to permit of the operation of said bracket. The prongs or projections 61 of the bracket 59, which is located near the opposite end of the casing 34, are pivotally secured to the top and bottom of the casing, while the projections 60 thereof are similarly secured to the top and bottom of the bar 34, but the link 58 in this instance is omitted. v

s From the foregoing and by reference to the drawings it will be readily understood and clearly seen that when the parts are assembled, as shown in Figs. 4 and 5 of the drawings, and the lock-casing is secured to the inner surface of the door 31, as shown in Fig. 1, when the cage reaches the proper landing the door maybe opened by moving the hand-lever 41 to the position shown by dotted lines in Fig. 5, which operation will disengage the book 43 on the lock-bolt 42 from the hasp 37, in which operation the adjustable bar 34 will be moved outwardly from the casing 34, so that its beveled end 35 will strike the lever 28 or roller 29 thereon when the same is used, when by slight movement of the door the lever 28 will be turned to about the position indicated by dotted lines in Fig. 2, in which operation the movable bar 20 on the wall of the cage will through the instrumentality of its connections'with the lever 28 be raised upwardly until its prongs 21 embrace the'arm 19 on the operating-lever 18, thus locking the same and preventing the movement of the. cage until the door is again closed. As soon as the hasp 37 strikes the sliding block 47 in the act of closing the door it is apparent that the detent 45, which holds the lock-bolt 42 in its raised position, will be disengaged from the lug or.

projection 46 on the lock-casing, thus permitting the lock-bolt to again engage the hasp and also allow the adjustable bar 34 to resume its normal position.

It is obvious that brackets 59 of the desired length 'may be employed to accommodate the different distances between the Walls of the cage and that of the elevator-shaft in which the doorways are formed.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with an elevator-shaft, of a sliding door at the landing thereof, an elevator-cage operatively located therein, an operating-lever in said cage, means on the cage to lock and release said lever by the operation of opening and closing said door, and an adjustable protrusile bar horizontally located on the door and adapted to coact with said lever-locking means in the movement of the door, substantially as described.

2. The combination with an elevator-shaft, of a sliding door at the landing thereof, an elevator-cage operativelylocated therein, an operating-lever in said cage, means onthe cage to lock and release said lever by the operation of opening and closing said door, a

mechanism on the door to lock the same, and

eration of opening and closing said door, a I

mechanism on the door to lock the same, and an adjustable .protrusile bar horizontally located on the door and connected to said doorlocking mechanism, whereby when thedoor is unlocked said bar will be protruded thereby, and retracted when the door is locked, said bar adapted to coact with said lever-locking means in the movement of the door to lock and release the said lever, substantially as described.

4. The combination with an elevator-shaft, of a sliding door at the landing thereof, an elevator-cage operatively located therein, an operating-lever in said cage provided with an arm or projection, a locking-bar vertically movable on the wallof the cage, said bar having prongs at its upper end to embrace the arm or projection on'the operating-lever when said bar is moved upwardly, a lever fulcrumed on the wall of the cage, connections uniting said lever and said bar, and an adjustable protrusile bar horizontally located on the door and adapted to impinge the last-named lever in the movement of the door, substantially as described.

5. The combination with an elevator-shaft, of a sliding door at the landing thereof, an elevator-cage operatively located therein, an

.i operating-lever in said cage having an arm or projection near its upper end, a locking-bar vertically movable on the wall of the cage, said bar having'the top thereof forked and adapted to embrace the arm of the operatinglever, a lever fulcrumed on the wall of the cage, connections uniting said lever to said locking-bar, a mechanism on the door to lock the same, and an adjustable protrusile bar horizontally located on the door and connected to said door-locking mechanism, whereby when the door is unlocked said bar will be protruded and when the door is moved slightly said bar will coact with the lever-locking means to lock the operating-lever of the cage, substantially as described.

RICHARD J. ROULO. Witnesses:

CHAs. C. TILLMAN, C. L. Room. 

